TierraCast gunmetal plated pewter beaded rivoli frame link. The inside is designed to fit a 12mm Swarovski crystal rivoli chaton. The outside diameter measures about 17mm in width by about 25mm in length. Each loop has an inner diameter of about 2mm.All TierraCast findings are designed and manufactured in the USA. They are high quality lead and nickel free pewter pieces. To see all of our TierraCast beads, charms and components, please click here. Watch the video below for a quick demonstration on how to use this product: